Torque Improvement In A Buried-Type IPM Bearingless Motor With A Novel Rotor Structure

In this paper, torque improvement in rotor designs of permanent magnet bearingless motors is described Novel rotor structures are proposed with modification of buried permanent magnet rotors. The torque and suspension force are obtained through Finite Element Analysis (FEM). It is shown that the torque is enhanced 80% while the suspension force is competitive.